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Good mental health is characterised by a person's ability to fulfil a number of key functions and activities, including: the ability to learn. the ability to feel, express and manage a range of positive and negative emotions. the ability to form and maintain good relationships with others. “Suppressing your emotions, whether it's anger, sadness, grief or frustration, can lead to physical stress on your body. Which can affect blood pressure, memory and self-esteem.” Mental illness itself occurs from the interaction of multiple genes and other factors -- such as stress, abuse, or a traumatic event -- which can influence, or trigger, an illness in a person who has an inherited susceptibility to it. However Physical activity, Regular exercise or activity can have a major impact on mental and emotional health problems, relieve stress, improve memory, and help you to sleep better.
Answer:
Harmful mutations may cause genetic disorders or cancer. A genetic disorder is a disease caused by a mutation in one or a few genes. A human example is cystic fibrosis. A mutation in a single gene causes the body to produce thick, sticky mucus that clogs the lungs and blocks ducts in digestive organs.
Mutations arise spontaneously at low frequency owing to the chemical instability of purine and pyrimidine bases and to errors during DNA replication. Natural exposure of an organism to certain environmental factors, such as ultraviolet light and chemical carcinogens (e.g., aflatoxin B1), also can cause mutations.
only a small percentage of mutations cause genetic disorders—most have no impact on health or development. For example, some mutations alter a gene's DNA sequence but do not change the function of the protein made by the gene.
